Paypal API in php

[muthukumaran_mr]

I'm a PHP developer, need to integrate the Direct Payment API into a website. I marginally understand XML, which I think I'm supposed to use to send/receive the payment info. Is there a tutorial out there somewhere that explains step by step how to do this? The materials I've gotten from Paypal aren't specific enough for me to fully understand what I'm supposed to do. I've done this in the past by opening a secure socket in the php code.

 

Thanks!